Don't understand why I don't have one yet , too much of a backlog with heli projects?

Tom, I love the field of view of GPH2, yes there is a "fisheye" distortion but the increased field of view more than compensates for it IMHO. Should be ideal for FPV down the road

The sound is very good as well, are you using the skeleton backplate on the housing? My skiing clips came in a bit muffled, I had it in the fully waterproof housing and I think it dampens the sound (a good thing for FPV though, I think).